US2434958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water purifier
Assignee: Individual
•
Filing: 1944-02-25
•
Granted: 1948-01-27
•
Expires: 1964-02-25
Abstract
No abstract record available.
Inventors
- 👤 David H Quinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:13
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/26; B01D24/00; B01D24/007; B01D24/02; B01D24/04; B01D24/08; B01D24/38; B01D24/40; B01D24/46; B01D24/4631
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US888469A
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US963767A
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US1535112A
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US1607989A
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US1914829A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-26 | 1951-07-28 | 1952-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-26 | 1955-07-28 | 1956-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-26 | 1959-07-28 | 1960-01-27 | $7700.00 | Window Closed / Lapsed |